they tend to have a bit of oil round the rocker cover, (cork gasket) low oil pressure, (faulty switch, located at the lower half at the front of the engine on the right) could be lose wire, could be worn oil pump plate, have a look in the 2.3 section, some good write ups, check rear axle for leakage at the front where it meets the prop, check the donut in the center of the prop for deep cracks, if so it aint going to last long, check leaf springs for play, also take a good look at the rear from a distance, you are looking for wheels sticking out more than the other,
but just in-case i have missed something, have a good look through here
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